Hiya,
I'm sorry to hear you're having issues launching the demo! I'll do my best to help and try to solve the issue! To be sure--you've unzipped the contents of the folder and are launching the .exe from the unzipped folder, correct? And are running on WIndows?
Also, if possible, could you printscreen/take a picture of the exact error message you're getting? It will help me to find out the source of the issue much faster and get you playing the game as quick as I can!
Thank you!
I've seen a similar error message before--though not this exact one. And just to cross off any possibilities: are you running the exe within the original folder you extracted it in? Since the exe won't work if it's moved away from the main folders.
Edit: I was able to replicate the exact error and confirm that this issue comes up if you attempt to launch the exe without the other files alongside it!
When you extract the zip folder, avoid moving or deleting any of the files there and try launching the .exe from that spot.
If you wish to create a shortcut to put on your desktop, etc.--don't move the .exe itself. Instead, right click the exe and select 'create shortcut', and then you can move that one safely around!